Which munitions element is not required at deployed locations or for units that do not support aircraft?

The correct choice refers to combat plans, training, and mobility as an element that is not required at deployed locations or for units that do not support aircraft. This is because this particular element is more relevant to units specifically engaged in air operations or those directly coordinating with aircraft.

In contrast, munitions plans and scheduling are critical for all operations involving munitions, as they ensure that the necessary supplies are properly managed and allocated. Precision guided munitions are particularly important for units that require precision targeting capability, making them relevant for ground units working closely with aerial support. Line delivery is essential for transferring munitions from the stockpile to the operational units, so it is also considered necessary in a deployment context.

Thus, while combat plans, training, and mobility may be foundational for effective operations, they are less critical for units that do not engage in air support roles or are stationed in locations where air operations are absent.